Cable maintaining device for curtains

ABSTRACT

A curtain cable maintaining device includes a cable maintaining unit having a bottom board with a guide hole defined therethrough. A pulley set is connected on the bottom board and has a first pulley and a second pulley. The cable is wrapped to the scrolling unit, the mandrel unit, the first pulley and the second pulley, and extends through the guide hole. The cable does not contact the periphery of the guide hole so as to reduce the friction with the guide hole and the cable does not hook with the mandrel unit when moving.

FIELD OF THE INVENTION

The present invention relates to a curtain cable maintaining device, and more particularly, to a curtain cable maintaining device which makes the operation of the cable be smoothly.

BACKGROUND OF THE INVENTION

The conventional curtain cable controlling device is disclosed in FIG. 9 and generally comprises a head box 20 in which a space 21 is defined, and a controlling device 30 is located in the space 21. The bottom board of the head box 20 has multiple through holes 22 and the controlling device 30 comprises at least one mandrel unit 31, at least one scrolling unit 32 and a cable 33, wherein the at least one mandrel unit 31 and the at least one scrolling unit 32 are located in the space 21. The cable 33 that is wrapped to the at least one mandrel unit 31 and the at least one scrolling unit 32, and the cable 33 extends through the through hole 22. The cable 33 is operated and activates the at least one mandrel unit 31 and the at least one scrolling unit 32 to control the movement of the curtain (not shown).

However, when the cable is operated to activate the at least one mandrel unit 31 and the at least one scrolling unit 32 to control the movement of the curtain, the cable 33 may be hooked to the at least one mandrel unit 31 and affect the operation of the curtain. Furthermore, because the cable 33 extends through the through hole 22 of the head box 20, the friction between the cable 33 and the periphery of the through hole 22 increases to shorten the life of the cable 33.

The present invention intends to provide a curtain cable maintaining device which improves the shortcomings of the conventional curtain cable controlling device.

SUMMARY OF THE INVENTION

The present invention relates to a curtain cable maintaining device and comprises at least two cable maintaining units and each cable maintaining unit has a bottom board. A pulley set is connected on the bottom board and has a first pulley with a first groove and a second pulley with a second groove. A guide hole is defined through the bottom board and located corresponding to the second pulley. Two fixing holes are respectively defined in two ends of the bottom board. A head box has a space and multiple through holes are defined through a bottom plate of the head box. The at least two cable maintaining units are fixed at the fixing holes of the bottom plate of the head box by. The guide holes of the at least two cable maintaining units are located corresponding to the through holes. At least one controlling unit has at least one mandrel unit, a scrolling unit and multiple cables. The at least one mandrel unit is fixed at the middle portion of the space. The scrolling unit is fixed at one end of the space. The at least two cable maintaining units are located between the at least one mandrel unit and the scrolling unit. The cables are respectively wrapped to the at least one mandrel unit, the scrolling unit, the first grooves and the second grooves. The cables then extend through the guide holes of the bottom board. The cable does not contact the periphery of the guide hole so as to reduce the friction with the guide hole and the cable does not hook with the mandrel unit when moving.

The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view to show that the curtain is pulled down and the curtain is equipped with the curtain cable maintaining device of the present invention;

FIG. 2 is a perspective view to show that the curtain is lifted and the curtain is equipped with the curtain cable maintaining device of the present invention;

FIG. 3 shows the cable maintaining unit of the present invention;

FIG. 4 is a cross sectional view to show curtain cable maintaining device in the head box of the present invention;

FIG. 5 is a perspective view to show curtain cable maintaining device in the head box of the present invention;

FIG. 6 shows that the curtain cable maintaining device of the present invention includes one scrolling unit and one mandrel unit and two cable maintaining units;

FIG. 7 shows that the cable maintaining unit has a cover fixed on top thereof;

FIG. 8 shows that the cable maintaining unit with a cover fixed on top thereof is installed in the head box;

FIG. 9 is a cross sectional view to show the conventional curtain cable controlling device.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1 to 4, the curtain cable maintaining device of the present invention comprises at least two cable maintaining units 10 and each cable maintaining unit 10 has a bottom board 11. A pulley set 110 is connected on the bottom board 11 and has a first pulley 110A and a second pulley 110B. The first pulley 110A has a first groove 110 a and the second pulley 110B has a second groove 110 b. The first and second pulleys 110A, 110B are located adjacent to each other, and the first groove 110 a is located corresponding to the second groove 110 b. A guide hole 111 is defined through the bottom board 11 and located corresponding to the second pulley 110B. Two fixing holes 112 are respectively defined in two ends of the bottom board 11.

A head box 20 has a space 21 defined therein and multiple through holes 22 are defined through a bottom plate of the head box 20, the at least two cable maintaining units 10 fixed to the fixing holes 112 of the bottom plate of the head box 20. The guide holes 111 of the at least two cable maintaining units 10 are located corresponding to the through holes 22.

At least one controlling unit 30 has at least one mandrel unit 31, at least two scrolling units 32 and multiple cables 33. The at least one mandrel unit 31 is fixed at the middle portion of the space 21. The at least two scrolling units 32 are fixed at two ends of the space 21. The at least two cable maintaining units 10 are located between the at least one mandrel unit 31 and the at least two scrolling units 32. The cables 33 are respectively wrapped to the at least one mandrel unit 31, the at least two scrolling units 32, the first grooves 110 a and the second grooves 110 b. The cables 33 then extend through the guide holes 111 of the bottom board 11. As shown in FIGS. 7 and 8, each of the at least two cable maintaining units 10 has a cover 12 fixed on top thereof so as to maintain the cables 33 from disengaging from the at least two cable maintaining units 10.

Referring to FIGS. 1 to 5, the cables 33 do not contact the peripheries of the guide holes 111 of the bottom board 11, so that when the cables 33 are moved, there will be no friction and resistance generated between the cables 33 and the peripheries of the guide holes 111 of the bottom board 11. Therefore, the operation of the cables 33 is smooth.

Referring to FIG. 6, the embodiment is similar to the previous embodiment, the difference is that only one scrolling unit 32 is available. The at least one mandrel unit 31 is fixed at the middle portion of the space 21 and the scrolling units 32 is fixed at one end of the space 21. The at least two cable maintaining units 10 are located between the at least one mandrel unit 31 and the scrolling unit 32. The cables 33 are respectively wrapped to the at least one mandrel unit 31, the scrolling unit 32, the first grooves 110 a and the second grooves 110 b. The cables 33 then extend through the guide holes 111 of the bottom board 11.

The cables 33 do not contact the peripheries of the guide holes 111 of the bottom board 11, so that when the cables 33 are moved, the cables 33 do not hook with the at least one mandrel unit 31 and there will be no friction and resistance generated between the cables 33 and the peripheries of the guide holes 111 of the bottom board 11. Therefore, the operation of the cables 33 is smooth.

While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention. 

What is claimed is:
 1. A curtain cable maintaining device comprising: a cable maintaining unit having a bottom board, a pulley set connected on the bottom board, the pulley set having a first pulley and a second pulley, the first pulley having a first groove and the second pulley having a second groove, the first and second pulleys located adjacent to each other, the first groove located corresponding to the second groove, a guide hole defined through the bottom board and located corresponding to the second pulley, two fixing holes respectively defined in two ends of the bottom board.
 2. The curtain maintaining device as claimed in claim 1, wherein the cable maintaining unit has a cover fixed on top thereof.
 3. A curtain cable maintaining device comprising: at least two cable maintaining units and each cable maintaining unit having a bottom board, a pulley set connected on the bottom board, the pulley set having a first pulley and a second pulley, the first pulley having a first groove and the second pulley having a second groove, the first and second pulleys located adjacent to each other, the first groove located corresponding to the second groove, a guide hole defined through the bottom board and located corresponding to the second pulley, two fixing holes respectively defined in two ends of the bottom board; a head box having a space defined therein and multiple through holes defined through a bottom plate thereof, the at least two cable maintaining units fixed to the fixing holes of the bottom plate of the head box, the guide holes of the at least two cable maintaining units located corresponding to the through holes, and at least one controlling unit having at least one mandrel unit, at least two scrolling units and multiple cables, the at least one mandrel unit fixed at a middle portion of the space, the at least two scrolling units fixed at two ends of the space, the at least two cable maintaining units located between the at least one mandrel unit and the at least two scrolling units, the cables respectively wrapped to the at least one mandrel unit, the at least two scrolling units, the first grooves and the second grooves, the cables extending through the guide holes of the bottom board.
 4. The curtain maintaining device as claimed in claim 3, wherein each of the at least two cable maintaining units has a cover fixed on top thereof.
 5. A curtain cable maintaining device comprising: at least two cable maintaining units and each cable maintaining unit having a bottom board, a pulley set connected on the bottom board, the pulley set having a first pulley and a second pulley, the first pulley having a first groove and the second pulley having a second groove, the first and second pulleys located adjacent to each other, the first groove located corresponding to the second groove, a guide hole defined through the bottom board and located corresponding to the second pulley, two fixing holes respectively defined in two ends of the bottom board; a head box having a space defined therein and multiple through holes defined through a bottom plate of the head box, the at least two cable maintaining units fixed at the fixing holes of the bottom plate of the head box, the guide holes of the at least two cable maintaining units located corresponding to the through holes, and at least one controlling unit having at least one mandrel unit, a scrolling unit and multiple cables, the at least one mandrel unit fixed at a middle portion of the space, the scrolling units fixed at one end of the space, the at least two cable maintaining units located between the at least one mandrel unit and the scrolling unit, the cables respectively wrapped to the at least one mandrel unit, the scrolling unit, the first grooves and the second grooves, the cables extending through the guide holes of the bottom board.
 6. The curtain maintaining device as claimed in claim 5, wherein each of the at least two cable maintaining units has a cover fixed on top thereof. 